Window-blind



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G. W. RADFORD.

WINDOW BLIND.

No. 346,220. Patented July 27, 1886.

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WITNESSES UNITED STATES PATENT OFFICE.

CHARLES \V. RADFORD, OF OSHKOSH, VTSCONSIN.

WINDOW-BLIND.

SPECIFICATION forming part of Letters Patent No. 346,220, dated July2'7, 1886.

Serial No. 186,411. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES \V. RADFORD, of Oshkosh, in the county ofVinnebago and State of Wisconsin, have invented a new and usefulImprovement in Vindow-Blinds, of which the following is a specification,reference being had to the annexed drawings, forming a part thereof, inwhich-- Figure 1 is a side elevation of a windowblind constructedaccording to my improvement. Fig. 2 is a vertical transverse sectiontaken on linew x in Fig.1, showing the blindslats open. Fig. 3 is avertical transverse section taken on line a: in Fig. 1, showing theblind-slats closed. I

Similar letters of reference indicate corresponding parts in thedifferent figures of the drawings.

The object of my invention is to construct a window-blind with thebottom and top rails arranged to stop the blind-slats in a horizontalposition, and prevent them from being closed by the weight of theslat-operating rod.

In blinds as ordinarily constructed the slats may be turned into ahorizontal position by means of the rod, where they are retained by thefriction of the slats in their bearings in the stiles; but when theblind becomes worn the slats will not be retained in this position ifdisturbed by wind or jarred in any way, as the slat-operating rod willfall and turn the slats so as to close the blind.

My invention obviates this difficulty by extending the upper and lowerrails of the frame of the blind so that they will be engaged by theupper and lower slats when the slats are in a horizontal position.

The blind-frame A is provided with holes in its stiles 13, for receivingthe pivots a of the slats O. The slats C are connected by staples withthe slat-operating rod D in the usual well-known way, so that by movingthe rod D up and down the slats may be opened or closed.

The upper and lower rails, E E, which connect the stiles B at the topand bottom of the frame of the blind, are each provided with a rabbet,I), leaving the tongue 0, which in the case of the lower rail projectsupward on the inner side of the blind-frame to a point near the pivot ofthe lower blind-slat, so that when the slats are open, as shown in Fig.2, the lower blind-slat C will rest upon the upper edge of the tongue 0;but in case of the upper rail, 1*], the tongue 0 belonging to it extendsalong the outer side of the blind-frame, so that when the blind-slatsare opened the outer half of the upper blind-slat will rest against thetongue 0, as shown in Fig. 2.

\Vhen the blindslats are closed, the outer edge of the lower slat isreceived in the rabbet I) of the rail E, and the inner edge of the upperslat is received in the rabbet b of the upper rail, E, as shown in Fig.3.

\Vhen the slats are closed, the rod D passes over the edge of the tongue0 of the lower rail, E, and serves to prevent the slats C from be ingaccidentally turned.

it is obvious thatif my improvement be applied to the lower i'ail onlyit will be effective in holding the slats in an open position. It isalso obvious that where the blind is provided with one or more railsintermediate between its ends these rails should be formed with tongues0.

Having thus described myinvention, what I claim as new, and desire tosecure by Letters Patent, is-

The blind havinga rabbet and a tongue upon the top and bottom rails, atopposite inner edges or sides of said rails, in combination with theconnected slats, substantially as and for the purpose set forth.

CHARLES \V. It ADFORD.

Witnesses:

A. \V. XViNsLoW, F. O. STEWAET.

